Mocking a base class method call with Moq

Question

I am modifiying a class method which formats some input paramater dates which are subsequently used as params in a method call into the base class (which lives in another as

Answer 1

As of 2013 with latest Moq you can. Here is an example

public class ViewModelBase
{
    public virtual bool IsValid(DateTime date)
    {
        //some complex shared stuff here
    }
} 

public class MyViewModel : ViewModelBase
{
    public void Save(DateTime date)
    {
        if (IsValid(date))
        {
            //do something here
        }
    }
}

public void MyTest()
{
    //arrange
    var mockMyViewModel = new Mock(){CallBase = true};
    mockMyViewModel.Setup(x => x.IsValid(It.IsAny())).Returns(true);

    //act
    mockMyViewModel.Object.Save();

    //assert
    //do your assertions here
}